weller



2 Sheets-Sheet 1.

(No Model.)

-O. A. WELLER. 1 PRESS FOR MOLDING LBTTERSPROM ARTIFICIAL STONE. No. 306,884. Patented 0ct. 21, 1884.

wnnnssns: INVENTOR =l A aww 7 ATTORNEYS.

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(No Model.)

0-. A. WELLER. PRESS FOR MOLDING LETTERS FROM ARTIPIOIAL STONE. No. 306,884. Patented Oct. 21, 1884.

II II II I! ll lMl lllllllHllIll llllll WITNESSES INVENTOR E BY.

' ATTORNEYS.

2 SheetsSheet 2.

" UNTTen STATES PATENT Trace.

CHESTER A. lVELLER, OF N E\V YORK, N. Y., ASSIGNOR TO HIMSELF AND LOUIS G. LEYRER AND EMMA L. JOHNSON, BOTH OF SAME PLACE.

PRESS FOR MOLDING LETTERS FROIVI ARTIFICIAL STONE.

'JZ HCIFICATEON forming part of Letters Patent No. 306,884, dated October 21, 1884.

Appllentionlilcd February 29, 1884. (Nomodotl '1'?) all whom it nmy concern Be it known that I, CHESTER A. WELLER, of the city, county, and State of New York, have invented a new and Improved Press for Molding Letters from Artificial Stone, of which the following is a full, clear, and exact description.

The object of my invention is to provide a new and improved machine for molding let ters, figures, or digits and ornamental pieces out of artificial-stone mass or any other plastic mass.

The invention consists in the peculiar construction and arrangement of parts, as hereinafter fully described, and pointed out in the claims.

Reference is to be had tothe accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in-all the figures.

Figure l is a longitudinal elevation of my improved machine for molding letters, &c., parts being broken away. Fig. 2 is a plan view of the same. Fig. 3 is an end view of the same. Fig. 4 is a detail side view of the pressing mechanism. Fig. 5 is a detail sectional view of the die. Fig.6 is aperspective view of one of the letters.

On top of-a frame, A, or between the two side pieces of the said frame, a top plate, B, is held to slide, the side edges of the top plate being beveled and held under beveled strips on the top of the machine.

011 the under side of the top plate, B, racks G are formed, which engage with the teeth of segmental racks D, mounted on a transverse shaft, D, pivoted in the bottom of the frame A, and provided at one end with a lever, D for rocking'it. A transverse plate. E, rests across the middleof the top of the frame A, and alikeplate, E, extends across the bottom bars of the frame, which plates E and E are united by rods F, the top plate, E, being the presser-plate for moldingthe letters. Ahopper, G, is securely held above the frame A at one end of the same, and in the said hopper a vertical shaft. G, is journaled in a suitable cross-piece, which shaft is provided with a series of arms, G", of different lengths, and arranged in different horizontal planes, for the purpose of mixing the plastic mass, which is I placed in the hopper, and for pressing the same down. A pinion, g, is mounted on the upper end of the'shaft G, with which pinion a rack, H, engages, which is held to slide in 55 upwardly-projecting lugs of the hopper G. A standard, H, connected with the sliding plate B, is connected with the rack H, so that the rack will be reeiprocated with the sliding plate, and will revolve the shaft G. In that part of the plate opposite the one at which the standard H is fastened a recess, J, is formed. for receiving the top flange, K, of the outer casing, K, of the mold, so that the upper surface of the said flange K will be 6 flush with the upper surface of the plate B.

Ateach side of the mold-opening in the sliding plate B a downwardly-projecting plate, L, is held by bolts on the under side of the sliding plate, which plate is provided at each 70 edge with a vertical groove, Z, through which bolts Z pass, which also pass through lugs in a plate, M, which can be adjusted vertically between the vertical plates L, which plates L are provided in their inner surfaces with two 7 guide ridges, m, which pass into guide-ridges in the edges of a vertically-sliding pressplate, N, held between the vertical plates L. Each vertical plate L is provided with a vertical slot, L, into which rollers pass which are 8 mounted on the ends of a transverse shaft, O, which is adapted to slide vertically in the said grooves L.

On each end of the shaft 0 a cross-piece, O, is formed, to the ends of each of which connect- 85 ing-rods P and P are pivoted, the former projecting downward and the latter upward. The downwardly-projocting rods P have their lower ends pivoted to lugs Q on the sides of the vertical plates L, and the upwardly-projecto ing rods P are pivoted to lugs Q on the movable press plate N. A lever, B, projects from the shaft 0, and is used for the purpose of working the said shaft. The contour of the opening in the mold K is precisely the same 5 as the outer contour of the letter or ornament to be shaped or molded. A standard, S, secured on the adjustable plate M, has exactly the same cross-section as the opening of the letter or ornament, provided the said letter I00- or ornament has a central opening. Letters like 1) O Q B, duo, have central openings and require the standard 5. A die or plunger, T, which is secured on the movable press-plate N, is of such thickness and shape that it fits exactly and precisely 011 the space between the inner surface of the mold K and the outer surface of the standard S. If letters like M, I I K &c., are formed, the standard S can be dispensed with and only the mold K and I the die or plunger T are used.

The operation is as follows: lhe artificialstone mass or other mixture from which the letters or ornaments are to be formed is filled edge of the die T and the under surface of the press-plate The pressure will not be on the frame of the machine. It will all be taken up by the plate E and by the plates L as the a pressure of the lever it exerts itself on the plates L and presses the movable press-plate N upward, the pressure of which is exerted l against the mass and against the plate E. After a letter has been molded, the lever D is swung downward still fart-her to swing the mold to the front end of the machine, and then the lever .l is again depressed, forcing the plunger or die T to press the molded letter upward. The letter is then dried, finished, l\:c. The lever .1- is swung up for the purpose of lowering the die T, the mold is moved under the hopper again, and so on.

Before operating with this machine the 3 plate M must be so adjusted that the standl ard S will be flush with the upper surface of l the sliding plate I3. When the lever B is 1 raised, the plunger or die T will be lowered l to such an extent as to leave a cavity between I the upper surface of the sliding plate B and i the upper surface of the die T, to receive the desired quantity of the plastic mass.

Havingthus described my invention, what I claim as new, and desire to secure by Letters Patent, is l 1. In a molding'machine. the combination, with a fixed hopper, of a sliding mold-plate, provided with the racks G on its lower sur- 1 face, the segmental racks D, the shaft I), and the lever D 011 the end of said sl1al't,subslantially as herein shown and described.

2. In a molding-machine, the combination,

with the hopper G, the sliding mold plate B,

vided with mold K. and means for operat ing the said plate. ofthe sliding plate N. pro vided with die T, the shaft 0, arms 0, rods P P, and lever B, substantially as herein shown and described.

5. In a moldingmachine, the OOll'lbllltltlOll, with the sliding mold-plate l3 and the pla es L, of the plate M, adjustably Sr-Clllcd to said plates, and the standard S on said adjustable 1 plate, substantially as herein shown and described.

(i. In a molding'machiue, the combination,

with a sliding plate carrying the mold K, of

the plates I1, projecting downward from the sliding plate, and provided with vertical slots l, the horizontal plate M. held on the plates L by bolts Z, passed through the slots 7. the standard S on the plate M, the vcrticillysliding press-plate N. carrying the plunger or die T, the fixed press-plate E, and of the le vers for pressing the press-plate N upward, substantial y as herein shown and described.

7. A mold for molding letters orornaments, consisting of an outer section the aperiurc of which has the same contour as the outer edge of the letter or figure to be formed, a stamiard the cross-section of which is the same as the opening in the letter or figure to be formed, and of a plunger adapted to slidebctween the inner surface of the outer mold and the outer surface of the standard, substantially as herein shown and described.

CHESTER A. WELLER.

\Vitnesses:

Osoan F. GUNZ, ('7. Snnewtoit. 

